Stock-Based Compensation (Tables)

3 Months Ended

Mar. 31, 2014

A combined summary of activity in the Corporation’s active stock-based compensation plans is presented in the following table.



				Non-Vested Stock Awards/Stock Units Outstanding			Stock Options Outstanding
	Shares Available for Grant		Director Deferred Stock Units Outstanding	Number of Shares	Weighted- Average Grant-Date Fair Value		Number of Shares		Weighted- Average Exercise Price
Balance, January 1, 2014	2,862,603		33,224	199,740	$	55.32	4,738,690		$	54.35
Authorized	—		—	—	—		—		—
Granted	(5,000	)	—	—	—		5,000		77.53
Stock options exercised	—		—	—	—		(329,825	)	52.39
Stock awards vested	—		—	—	—		—		—
Forfeited	20,350		—	—	—		(20,350	)	55.69
Canceled/expired	—		—	—	—		—		—
Balance, March 31, 2014	2,877,953		33,224	199,740	$	55.32	4,393,515		$	54.52

Shares issued in connection with stock compensation awards along with other related information were as follows:



	Three Months Ended March 31,
	2014		2013
New shares issued from available authorized shares	—		153,275
Issued from available treasury stock	329,825		242,150
Total	329,825		395,425

Proceeds from stock option exercises	$	17,279	$	20,446

Stock-based compensation expense was as follows:



	Three Months Ended March 31,
	2014		2013
Stock options	$	1,770	$	1,998
Non-vested stock awards/stock units	366		344
Deferred stock units	—		—
Total	$	2,136	$	2,342

Unrecognized stock-based compensation expense at March 31, 2014 was as follows:



Stock options	$	14,478
Non-vested stock awards/stock units	2,463
Total	$	16,941